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Spicy spices (like cayenne pepper, habañeros jalapeños, etc.) contain a chemical called capsaicin that binds to your heat receptors (even other places than your tongue, so don't rub your eyes when your hands have hot pepper juice on them!). The heat receptors send a message to your brain that they are hot, so to your brain, it feels like there is literal heat being applied.

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13y ago

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